1653542790 has 32 divisors (see below), whose sum is σ = 4096521216. Its totient is φ = 426720480.

The previous prime is 1653542789. The next prime is 1653542809. The reversal of 1653542790 is 972453561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888072 + ... + 889931.

It is an arithmetic number, because the mean of its divisors is an integer number (128016288).

Almost surely, 2^1653542790 is an apocalyptic number.

1653542790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1653542790 is an abundant number, since it is smaller than the sum of its proper divisors (2442978426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1653542790 is a wasteful number, since it uses less digits than its factorization.

1653542790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778044.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 1653542790 is about 40663.7773700378. Note that the first 3 decimals coincide. The cubic root of 1653542790 is about 1182.5108819640.

The spelling of 1653542790 in words is "one billion, six hundred fifty-three million, five hundred forty-two thousand, seven hundred ninety".